MESON Chess Problem Database

Problem Display
PID: 183022 (4RR1r/7B/8/4N1Nq/Q2P2P1/4k1P1/2pr2n1/2Kb4 w - - 0 1)

Segal, Leon

6th Place, Match: France - Romania, 1951-1953

4RR1r/7B/8/4N1Nq/Q2P2P1/4k1P1/2pr2n1/2Kb4

#2

10 + 7

78 Bulletin Ouvrier des Echecs 1953

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg4
      • 2.Sxg4#
    • 1...Qh1
      • 2.Sd3#
      • 2.Sc6#
      • 2.Sd7#
    • 1...Qh2
      • 2.Sd3#
      • 2.Sc6#
      • 2.Sd7#
    • 1...Qh3
      • 2.Sd3#
      • 2.Sc6#
      • 2.Sd7#
    • 1...Qh4
      • 2.Sd3#
      • 2.Sc6#
      • 2.Sd7#
    • 1...Re2
      • 2.Rf3#
    • 1...Rf2
      • 2.Sef7#
    • 1...Rd3
      • 2.Sg6#
    • 1...Rxd4
      • 2.Sc4#
    • 1...Bxg4
      • 2.Sxg4#
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxd2#
      • 1...Ke2
        • 2.Qxd2#
      • 1...Rxd4
        • 2.Sc4#
      • 1...Re2
        • 2.Rf3#
        • 2.Qc3#
      • 1...Rf2
        • 2.Sef7#
      • 1...Rd3
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(f);XP(E)::R(I)+S(F),DCHECK,XQ(f)
    • R(c);SBLOCK,S_CUTB(a)::R1(J)
    • R(c);SBLOCK::R(I)+S(F)
    • R(c);SBLOCK,XP(D)::R(I)+S(F),DCHECK
    • B(a);XP(E)::R(I)+S(F),DCHECK,XB(a)
  • Actual
    • Q(C);
    • Threat
      • QAB1(C),XR(c)
    • Vars
      • K(e);P-FLIGHT::QAR1(C),XR(c)
      • R(c);SBLOCK,XP(D)::R(I)+S(F),DCHECK
      • R(c);SBLOCK::R(I)+S(F)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).